Answer:
Frogs and toads produce a rich variety of sounds, calls, and songs during their courtship and mating rituals. The callers, usually males, make stereotyped sounds in order to advertise their location, their mating readiness and their willingness to defend their territory; listeners respond to the calls by return calling, by approach, and by going silent. These responses have been shown to be important for species recognition, mate assessment, and localization. Beginning with the pioneering experiments of Robert Capranica in the 1930s[1] using playback techniques with normal and synthetic calls, behavioral biologists and neurobiologists have teamed up to use frogs and toads as a model system for understanding the auditory function and evolution. It is now considered an important example of the neural basis of animal behavior, because of the simplicity of the sounds, the relative ease with which neurophysiological recordings can be made from the auditory nerve, and the reliability of localization behavior. Acoustic communication is essential for the frog's survival in both territorial defense and in localization and attraction of mates. Sounds from frogs travel through the air, through water, and through the substrate. The neural basis of communication and audition gives insights into the science of sound applied to human communication.
Explanation:
Answer:
Parasites only wish to suck the life out of their prey, but predators wish to kill and eat their prey. The main difference is killing what they eat.
Answer:
In developing countries children are needed as a labour force and to provide care for their parents in old age. In these countries, fertility rates are higher due to the lack of access to contraceptives and generally lower levels of female education
Explanation:
Answer:
Aerobic activity
Explanation:
Aerobic activity can be defined as a type of physical activity which involves the the circulation of oxgen through the blood.
Aerobic activity is an activity which increases the amount of blood that goes to the muscles. Oxygen is needed for the proper functioning of the muscles.
When carrying out any type of physical activity such as weight lifting the muscles need a large amount of oxygen to function well. The oxygen in the body is used to break down glucose and create the fuel which is needed by the muscles in the form of ATP. Different aerobic activities carried out also helps to strenthen the lungs.
